999995000000 has 112 divisors (see below), whose sum is σ = 2480462400000. Its totient is φ = 399996000000.

The previous prime is 999994999999. The next prime is 999995000009. The reversal of 999995000000 is 599999.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (999995000009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4900001 + ... + 5099999.

Almost surely, 2^999995000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999995000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240231200000).

999995000000 is an abundant number, since it is smaller than the sum of its proper divisors (1480467400000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999995000000 is an frugal number, since it uses more digits than its factorization.

999995000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200046 (or 200006 counting only the distinct ones).

The product of its (nonzero) digits is 295245, while the sum is 50.

Adding to 999995000000 its reverse (599999), we get a palindrome (999995599999).

The spelling of 999995000000 in words is "nine hundred ninety-nine billion, nine hundred ninety-five million", and thus it is an aban number.